I have spoken in OUS floor debates on many occasions back in the 1980s and never signed any form of copyright release. It was understood then that every debate was recorded, there are microphones prominently placed on the dispatch boxes. But none of those debates was published at the time. There is an archive no doubt but the Web did not exist when the recordings were made.
This panel appears to have been on the same terms. There was no guarantee of publication. There was however a right for each panelist to veto publication. Seems pretty clear to me.
